Not so sure about that. Have you tried cloud seeding?
Discussion
haha forgot about that, but one needs clouds first I suppose
Nope, just throw some sulfur up in the air and you will have clouds.
Thanks, interesting area of research
https://www.scientificamerican.com/article/eight-states-are-seeding-clouds-to-overcome-megadrought/
Some challenges remain for draught areas apparently:
“Meteorological drought is defined as a shortfall in precipitation over a certain time period, typically over a long period of time like months. This means that there is a lack of precipitation in a region that comes from a lack of moisture in the air. Because moisture is the first ingredient for cloud seeding to produce rain, cloud seeing cannot be used as a solution to create rain during drought conditions.”
Heather Holmes, Assistant Professor in the Department of Physics and Atmospheric Sciences Program at the University of Nevada, Reno
for my own records here, on the use of nanotech: